Save a few cycles during nbtree VACUUM. Avoid calling RelationGetNumberOfBlocks() unnecessarily in the common case where there are no deleted but not yet recycled pages to recycle during a cleanup-only nbtree VACUUM operation.
Follow-up to commit e5d8a999, which (among other things) taught the "skip full scan" nbtree VACUUM mechanism to only trigger a full index scan when the absolute number of deleted pages in the index is considered excessive. Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/7bb97211a5589265f3f88183ae9353639ab184c6 Modified Files -------------- src/backend/access/nbtree/nbtree.c | 14 +++++--------- 1 file changed, 5 insertions(+), 9 deletions(-)
